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Featured researches published by Kiyoshi Tokita.


Displays | 1991

Geometric compensation for mask expansion of colour cathode-ray tubes

Kiyoshi Tokita; M. Inoue; Toshinao Sone; Hiroshi Urata

Abstract It has been difficult for many years for colour-cathode-ray-tube designers fully to compensate for long-term mask expansion of low-deflection-angle C-CRTs, such as, for example, 90°-deflection C-CRTs In addition, the introduction of the invar (Fe-36Ni alloy) mask has presented designers with new problems in terms of colour-purity performance and cost effectiveness. The paper describes problems of conventional thermal compensation systems from the practical-use viewpoint. The paper also reports two unique aspects of the mask-suspension design, which are revealed using a structural-analysis program, and provide the added advantages of full geometric compensation for long-term mask expansion.


Archive | 1987

Color picture tube with support members for the mask frame

Toshinao Sone; Hiroshi Urata; Michio Nakamura; Tooru Takahashi; Hidetoshi Yamazaki; Kiyoshi Tokita


Archive | 1984

Color cathode-ray tube having shadow mask with variable sized apertures

Kiyoshi Tokita; Michio Nakamura


Archive | 1986

Color cathode ray tube with resilient shadow mask support

Kiyoshi Tokita; Michio Nakamura; Hiroshi Urata


Archive | 1987

Cathode ray tube deflection device having heat dissipation means

Kiyoshi Tokita; Kaneharu Kida; Michio Nakamura; Tooru Takahashi


Archive | 1984

Manufacturing method of color picture tube

Kiyoshi Tokita


Archive | 1990

Method and apparatus for supporting a shadow mask

Kiyoshi Tokita; Takashi Murai; Takeshi Fujiwara


Archive | 1987

Colour picture tube

Toshinao Sone; Hiroshi Urata; Michio Nakamura; Tooru Takahashi; Hidetoshi Yamazaki; Kiyoshi Tokita


Archive | 1993

Cathode ray tube which improves deflection aberration

Takeshi Fujiwara; Kiyoshi Tokita; Masatsugu Inoue


Archive | 1986

Method of making a shadow mask

Kaneharu Kida; Norio Koike; Hidemi Matsuda; Kiyoshi Tokita

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